Typewriting machine



A ril 27,1926.

J. A. B. SMITH TYPEWRITING MACHINE Filed Feb. 16, 1924 3 Sheetg-Sheet 1 a Will/1111115!!! l/lIlI/dllll/JVIII/l/d A A ril 27,1926. I v 1,582,435

J. A. B. SMITH TYPEWRITING MACHINE Filed Feb. 1 6, 1924 3 Sheets-Sheef'2 April 27 1926.

1,582,435 J. A. B. SMITH Y TYPEWRITING MACHINE Filed Feb. 16, 1924 3 Sheets'Sheei 3 Fatented Apr, 2?", 1%25.

i o ow or tiller 53 i A .l lso a. :e. SMETl-I, or

' 'rrrnii nrr.

Application filed February To QZZ whom it may concern:

t known that .l, dl 1f-Sl l A. B. SMITH, a

' Connecticut, have invented certain new and useful Improvements in Typevritingg' Machines, of which the following is a specification.

This invention relates to machines for. cutting address stencils, and particularly to machines of the class whe pin the stencil: is fed past the printing point, without substantial bending, by means of a stencil-carrying i ranie arranged to be raised step by step to line-space the stencil, such, for example, as the machine disclosed in the patent to Flliott, No. 1,378,711, granted May '17, 1921.

In the machine of saidv pr. and, provision was made of a stencil-carrymg :rame pivoted on the carriage, far to the rear of the printinc point, and provided, at its forward end, with clamping jaws to grip the stencils by their upper margins. The carrying frame was lifted, step by step, to line-space the stencils, by means of a thumb-wheel on a rain-shaft carried by the stencil-carrying t'anie. Rotation of the min-shaft by the thumb-wheel caused the shaft to be raised bodily to lift the stencil-carrying frame. Provision was made of a detent-ratchet having teeth to determine successive line-space positions of the stencil-carrying; frame, and to detain it in such positions. This ratchet was angulaily adjustable with reference to the cam-shaft, and was provided with several 0t teeth which could le made tive selectively, each set of teeth being ranged to divide the rise ot the frame. etcted by the cam, into a dil'l erent number of ,1 and therehy to provide a different number ot lines of writing within the liniited space provided on a stencil.

ltis an object of the present invention to lize the above-mentioned features while kingprovision for a more rapid linepacing of" the w rl: and returning ot the arriag'e tharL was possible in the Elliott niaine. To this end, provision is made of Jae lever for the stencil-carrying aine arranged like the usual line-space lever o it. Underwood machine to return the carriage each line-spacing operation. This lever drives rearwardly a slide having" a pawl pivoted on it at its rear enchwhich pawl extends'terward to engage and drive ldidZAiBS fiTABIEORD, CON'NECTICET, AI'QZSAGNQR TS UNDER'VOOD TYPE- WELLER CUIVIPAhl-i, OF NEW YORK, N. 1.,

A CORPORATIGN OE DELAVTARE.

LJG "EACHINE.

1Q, 1924, Serial No. 693,166.

a line-sp ce ratchet-wheel fast to the detentratchetw Tl line-space ratchet-wheel has sets of teeth corresponding in spacing and angular arrangement to the teeth of the dctent-ratchet, and may be angularly adjusted with the detentn'atchet relatively to the tran'ie-li'ltinp; cam-shaft to select the length of the line-feeding steps requirec The camshaft, as it rotates, rises bodily step by step to lift the frame, and in this way line-feeds the stencil held by the frame. he linespace ratchet-wheel rises with the camshaft, and the line-space pawl, urged by a spring, rises with the ratchet-wheel, said pawl being pivoted on the line-space slide far to the rear of the ratchet-wheel, so that its rise will not materially a ltect its relation to the ratchet-wheel.

lVhcn a stencil has been completed, the stencil-11a1ne may be swung upwardly and a stencila'eleasing handle may be pressed to open the jaws, to permit the removal of the finished stencil and the insertion of a new one. In the present machine, as in the patent to Elliott referred to above, the operat on of the jaw-opening handle is also effective to release the detent-ratchet to permit the return of the cam-shaft to its initial position under the intl tence of a return spring, so that the fresh stencil may be 10 vered to first writing-line position.

It is. also important, in the present inven-. tion, that the line-space ratchet be disengaged from the line-space pawl at this time. since otherwise the line-space pawl and ratchet would prevent the return of the camsaa'ft'. In order to permit disengagement of the line-space ratchet from the line-space pawl, and to maintain the line-space pawl in position to intercept the ratchet and operatively engage it when it is again lowered, provision is made of a stop on the slide to limit the rise of the pawl about its pivot.

In the Elliott patent, provision was made of a strip-carbon device for melting impressions on the backs of tlie'stencils, this carbon being arranged to be line-fedby the platen of the machine, and hence beingline-ted each time that the carriage was returned by the platen line-spacing handle. It is unnecessary, however, to line-space the carbonstrip at the conclusion of every line.

In the machine ofthe present invention,

provision is made of take-off teed-rolls for segment of the machine to extend up in front of the platen. to HSSISC in guiding the its insertion into the machine. To prevent catching of the stencil on the type-ha: guide of the inachinc, guide-fingers may be provided to extend upwardly and forwardly from the guide-plate alongside of the typebar guide.

Other features and advantages will hereinafter appear.

In the accompanying drawings Figure l is a fragmentar sectional front elevation of a typewriting machine of the Underwood type, having the present im provements applied thereto.

Figure 2 is a fragmentary plan view, showing the line-space lever and the line space slide.

Figure 3 is a horizontal section through the cam-shaft and the ratchet-wheels.

Figure l is a vertical sectional view on the line t-t of Figure 1, showing in full lines the line-space ratchet-wheel lifted out of engagement vith the line-space pawl and in dotted lines another position of said ratchet-wheel. The ratchet-wheel is adjustd to provide three writing positions.

Figure 5 is a view similar to Figure 4, showing the line-space ratchet-wheel set to provide four writing positions and with the parts in actuated position at the end of the first feeding stroke. The first and fourth vriting positions are illustrated in dot-anddash lines.

Figure 6 is a view similar to Figure at, showing the line-space ratchet-wheel set to provide three writing positions, and with the parts in the first writing position. Other positions are illustrated in dot-and-dash lines.

Figure T is a view similar to Figure l,

showing the line-space ratchet-wheel set to provide five different writing positions, and illustrating the carbon-strip mechanism.

Other positions are indicated in dot-anddash lines.

Figure 8 is a tra ientary plan view of e machine einl. odviiig the present invenmounted in a type-liar segment 10 to swing upwardl and reaewardly through the throat of a type-guide 11 to print against the front face of a cylindrical platen l2 jourin led by its axle 13 in the GlCiS of a plaien-fi'aiiie ll. The platen-fraine is mounted on a carriage 15 for travel therewith in letterfeei.l and re verse directions. A stencil-carrying 'l'raiiie 16 comprising side 11.. nhers 1T pivotally mounted upon a transverse rod lo carried by the platen-f 'ame ll far to the rear of the printing point of the machine. This stencilcarrying frame 16, at its forward exti'eiizitv.

provided with fixed l5) and CO'OPCltiY- 1"" )ivoted 20 to clamp the upper mar- 'in of an inserted stencil-card 21 to carry )ast the printi g point. A -am-shaft L. rotatable b v 2 thuiiihwheel 23 is journaled in the t:aicil-carrviiig {mine 16, and his fast upon it cam it to engage a fixed abutment 2i carried by a t'ansverse rod il i'i'iounteil on the pla1eiirame l l. This cam bl is so formed that the turning of the rhuinh-whecl 2 causes the cam-shaft 22 to he raised bodily. and as a consequence to swing ti e stencil-carryiiig Tame l6 about the rod 18 to lift the stencilcard 21 in the machine relatively to the printing point. A detent ratchet-wheel comprising ets of teeth 2t), 27 and J5 arranged to he made fast to th \[Lilll-Silillll :2 in any one oi three adjusted positions by means of recesses 29 in the i'atcliet-wliecl and a pin -30 (see Figure 3) on the cam 24. A finger-wheel Sl fast to the deient i-aichi-e wheel is provided whereb the detent ratchet-wheel 25 may he moved loi'igitudinally of the camshaft 22 against the pressure of spring -52 to disconnect it 'l'roiii said shaft 22 for angular adjusiiiient with reference thereto. A detent-igawl ljil pivoted on the stencilcarr ving frame it; elk gages the teeth of the detent ratchet-wheel 35 to determine line-spa:e positions of the stencil 21. There are three notches in ihai iortion of the ratchet-wheel occupied b the teeth 26, so that. three line-space pos ones.

will be obtainable with this portion ot the detent ratchet-wheel ell ective whilev lllt'l'i! are four more closely spaced notches in that portion of the ratchet-wheel occupied o v .pace posithe teeth 2? to provide four lii tchet occuietions when the portion of the 1' a pied h these teeth is eti'ective. an l similarl there are five notches in that portion ot the ratchet-wheel occupied by the teeth 28 to provide the line-space positions when llils? portion of the ratchet-wheel is elt'eciive.

Provision is made of ii stenci -rel asin; handle 34: for moving the E 4 it) away from the stationary 3a stcncil 2 has hccn eoiiipletei ii-l operates an a through a link to the (lettli awl J J in such a manner that the i'leteiit-pawl is swung 'i'his handl on-cl one of the teeth 47.

out of engagement with the detent-ratchet wheel concomitantly with the release of the stencil-card 21. A return spring 36 connectedL to the cam-shaft 22 and to the stencil-tarrving frame-16 restores the camshaft to its initial position, when permitted to do so, by the release of the detent-pawl The mechanism thus far described is like that di closed in the patent to Elliott, referred to.

in accordance with the present invention, provision is made of a lever 37 arranged to line-space the stencil-carrying frame 16 and to return the carriage 15 at a single operation. This lever 37 is pivoted'on the carriage l5, and has a toe 38 to engage and drive rearwardly a line-space slide 39 which is slidingly mounted on the platen-frame and is bifurcated to slidingly embrace the transverse rod 2% A return spring 40 nor mally holds the line-space slide 39 at the forward limit of its movement. The linespace slide 39 has pivoted at its rear end'a pawl ll that extends forwardto engage a line-space ratchet-wheel fast on a shaft all which forms an extension of the detent ratchet-wheel 25, and which is borne in an arm ate of the stencil-carrying frame 16. The line-space pawl ll is urged upward toward the line-space ratchet-wheel 4L2 by a leaf-spring e5 lllOUIltQd on the line-space slide 39, and is limited in its upward movement by ashelf or stop 46 projecting above it from the line-space slide.

The line-space ratchet-wheel 42 has three sets of teeth 47, 4,8 and 49 which are spaced, respectively, to provide two, three and four feeding movements of the cam-shaft 22. The teeth 47 are spaced to correspond to the spacing of the teeth 26 on the detentratchet; the teeth 18 are spaced to corre spond to the spacing of the teeth 27 on the detent-ratchet; and the teeth 49 are spaced to correspond to the spacing of the teeth 28 on the detent-ratchet. The line-space ratchet 42, being fast to the detent-ratchet 25, may be adjusted in unison therewith.

(Then the line-space and detent ratchets are set for two line-feeding movements, that is, to write an address consisting of three lines, as shown in Figures at and 6, the linespace pawl ll and line-space ratchet 42 will initially occupy the position shown in full lines in Figure 6. lVhen the first line has been written the lever 37 will be actuated to return the carriage and to operate the line-spacing mechanism to the dot-a-nd-dash position indicated at 39, 4:15, 4:2 in Figure -1 which position is the same as the first eotnml-dash position of Figure 6. l i hen the lever is-released the pawl will travel from the first dot-and-dash position indicated in Figure (3 to engage behind'the seclVhen the second line has been written the lever will be again actuated and released, whereupon the pawl will be reeiprocated to lift the line-space ratchet to the position indicated at 42 in Figure 6, the pawl itselfreturning to the Po sition indicated at ll.

il hen the third line has been written it will be desired to lC-ll'lOYG the stencil from the machine. This may be done by seizing the stencil-release handle 3-1- and a co-operating abutment handle 50, and pressing them'together to move the movable jaws 20 to release the stencil-card. (See the dotand-dash position of Figure 9.) These handles 23 i and 50 at the same time may be lifted to swing the stencil-carrying frame lliup to raise the line-space ratchet clear of the line-space pawl l', as shown in full lines in Figure l. The disengagement of the line-space ratchet from the line-space pawl ill at this time is important because these elements would prevent the return of the cam-shaft 22 to its initial position if they were permitted to remain engaged. [as has been previously stated, the detcnt-ratchet 25 is released from the holding action of-the detent-pawl 33 by the pressure on the stencil-releasing handle 31, so that the camshaft 22 is free to be returned to its initial position by its return spring 36, which position is determined by engagement of a surface 51 on the cam 2lwith a pin 52 on the stencil-carry-iag frame.

When it is desired to write an address which consists of four lines the finger-wheel 31 ispulled toward the left against the pressure of the spring 32 to disconnect the de tent-ratchet 25 and the line-space ratchet 42 from the cam-shaft The shaft l3, on which both of said ratchets 25 and l2 are fast, is then rotated to bring the teeth 2? of the detent-ratchet into co-operative relation to the detent-pawl 33, and to bring the teeth 18 of the linespace ratchet e2 into cooperative relation to the line-space pawl ll. This relationship of the line-space ratchet 42 and pawl ll is shown in Figure 5, in which figure the initial writing position of the line-space pawl and line-space ratchet are illustrated'in dot-and-dash lines at a1 and i2"; the actuated position at the con- 1 clusion of the first line its-illustrated in full lines; and the final writing position of the pawl and ratchet is illustrat-d in dot-anddash lines at li and 42.

In a similar manner the ratchets 25 and 42 may be adjusted relatively to the camshaft 22 to bring the teeth 28 on the detentra-tchet and the teeth a l on the line-space ratchet to effective position when it is desired to write an address of live lines; in Figure 1'. the initial writing positions of the line-space pawl and ratchet are illustrate in dot-and-dash lines at ll and 42, respectively; the actuated position at the conclu-- sion of the first line is illustrated in full eon-feeding linger-wheel is last to the roll 56, and may be rotated from time to time to teed the carbon 33 as it becomes worn. it detent-spring (it) co-operates with Uphill) spaced notches (ii on the lingerwheel to to control the extent ot carbon feeding movement, and to detain the lingerwheel a dust accidental turning.

'ihe -arriage returning lever 25? is not connected to the platen in the present machine, so that the pla en is not ordinarily rotated. .illlilti-KCliQOlS (-32, 0t which one is shown, are connected to the platen a its ends, and may he turned from time to time to b 'ing a fresh surface of the platen 12 into position to rece've the impact of the types.

(then a iinished stencil .21 has been removed from the stencil-holding jaws 1t) and slightly to the :l) and a fresh stencil has been gripped by them, the stencil-carrying frame will be ready to be lowered to locate the fresh stencil in its first writing line position. For the purpose of assisting in guiding the stencil to this position, provision may be made of a deflector-plate 63 mounted by lingers (5 1 upon the type-segment it). This deflector-plate is inclined forwardly toward its upper end and has it rolled upper end to provide a wide, snio th reception opening for the stencils and to keep them pressed bacl; close to the platen at the line of writing. l orwardlycu vcd liu 'ers (55 project upwardly from the deflector-plate 5 at op osite sides of the type-guide 11 to guide the stencil clear of said trpe-guide. The deflector-plate (33 en- {es the lower edge or the stencil and i rear, thus assuring i.- stencil will so held against the ilal'en at the line of writing.

ariations may be resort d to within the scope oi. the invention, a id portions of the iiuproveinei'its nay be ised without others.

Having thus described my invention, I claim: i

1. In a machine for impressing characters on stencils, the combination with a platen, a carriage and a of types, of stencil-holding ineans borne by the carriage and verticall movable adjacent the platen, a linespace lever, a line-s nce ratchet arranged tor operation by the line-space lever having sets of teeth differently spaced to provide dili'erent nun'ibers writing lines on the stencil, a detent-ratcnet having sets of teeth corresponding to the sets of teeth on the linespace ratchet, said detent-ratchet fast to the line-spare ratchet, the two rate-huts bcii1g:-.i.-

ible in unison to bring the dill'er ,-:1t s

or teeth into 11.3,1. iin; comment between the iltitwholding neans, including 2. with said ratchets step stencildaildin5;- means, the extent of move inent oi the ram being controlled by the spacing of the QliCtlllYC teeth on the ratchet 2. in a machine :lt'or impressing characters on stencil, the combination with a platen. a carnage and a set of types, of slcnril-holdiug 11111115 borne h the carriage and vertimovable l in platen, and

gust:

l t. \LY.I:.. ram moving n, ste to nit L.ll3

t... ill

means tor raisingt cm holdin't means. comprising a shat on 1 ie sit-iicii-lioldiiig means, a teed ratchet on ti o shait, said shall and ratchet arru ed rise with the sten- 1 1'.) 1.1, teed-rattchetopcrating a pin l mounted independcil-holding means. and means to the pawl to rise with the teed-ratchet to maintain co-operative en- '"ageinent therewith.

In a mac ie for impreon stencils, the ct carriage ing means l callv moved cil-holdng met o 1 characters e and vertie adjacent the plate-n, means l'or raising d stencil-holding means, (i-(imprising a shat, on the stencil-inviting: means, a feed ratchet on the shalt, said shalt and ratchet arranged to rise with the stencilholding means, 'l'eed-ratclu-t-operai lug means comprising a pawl mounted independently of the stcncihholding means, and means to zuse the pawl to rise with the teed ratcl at to maintain co-operative cngap'enlent therevith, and -zeans to linii he rise of the pawl, the arrangement being :h that the slencill. c t.

Silt

hoh'ng' ineans i i-a be i'l'ted to tree the "c d rat hct from tl e pawl to permit the c let to its initial position. ie 'ljor impressing characters on stencils, the coznlnnation with a platen. a carriag and a. set ol tvpcs, oi .--tencil-ho 'llug inc-ans borne by t adjac the means 3 stencildlohlins means (JUMP lean: ratchet on the shaft, said snal't and irranged to rise with the stencil neans,

Cally inovai )le llnlen, tor raising th prising: e. shaft on the stencildiolilin l a teed l". .zhetop i'alin -'ine:;iis mounted iinlependentl ans. and means to .ith the iced ratchet e eng emeni' thererisct Lhc pawl the =:h that the stencillilted to disen; the feed ratchet and p 1 to permit the turn of the 'atchet to its; initial po ition, and means for restoring the l'eed rat-liet to its initial position when the "feel rat pawl are disengaged.

\\'itil,l11(3tl1 arrang ment being holding means may :het and holding means, feed-ratchet operating means comp ising a pawl mounted independently of the stencil-holding means, and means to cause the pawl to rise with the feed ratchet to maintain co-operative engagement therewith, means to limit the rise of the pawl, the arrangement being such that the stencilholding means may be lifted to free the feed ratchet from the pawl to permit the return .of the ratchet to its initial position, and

means for operating the stencil-holding means to release a completed stencil and for concomitantly restoring the feed ratchet to its initial position when the feedpawl and ratchet are disengaged.

6. In a machine for impressing characters on stencils, the combination with a platen, asetof types, and means for presenting a stencil to the printing line of the platen, of carbon-controlling mechanism comprising means operable at will for feeding a carbon-strip around the platen to bring a fresh carbon-surface to the line of writing while said platen remains stationary.

'7. In a machine of the kind described, a platen, a carriage, a set of types, av carbonsupply device at the introductory side 'of the platen, and carbon-feeding means at the delivery side of the platen, comprising a pair of co-operative feed-rolls and means to control the length of the carbon-feeding steps effected by said feedrolls.

8. In a machine of the kind describecha platen, a carriage, a set of types, a carbon supply device at the introductory side of the platen, and carbon-feeding means at the delivery side of theplaten, comprising a pair of co-operative feed-rolls,a finger-wheelfor operating said feed-rolls independently of the platen, and detent-means constructed to cause the feeding steps imparted by the feedrolls to be of uniform length.

9. In a machine forimpressing characters on stencils, the combination with a platen and a type-guide, of a deflector plateatthe front of the platen having the upper edge thereof rolled over to provide a smooth reception opening between said edgeand the platen, said deflector plate including; guard fingers extending upwardly and outwardly from saidedge, at opposite sides of the-type- .guide, for guiding the lower edge of the card away fromthetypeguide to position withinsaid reception. opening.

10. In a machine for impressing characters on stencils,the combination with plat en and atype-guide, of a deflector plate disposed adjacent the front of the platen for guiding a stencil-card down to the typing line, the upper and lower edges of said plate being bowed away from the platen whereby to prevent fouling of the stencil-card thereon, during insertion in the machine or removal therefrom.

11. In a front-strike.typewritingmachine, the combination with a platen and a carriage therefor, of a frame overlying the platen and pivoted at its rear upon the carriage and overhanging the front of the platen, and at its front'end having means forsupporting a stencihcard pendent therefrom in front of the platen, a cam mechanism acting upon said frame and camming the sameto different heights, a handle upon said carriage for returning the same, and operative means extending from said han dle to said cam mechanism to cause thelatter to elevate the frame step by step at successive reciprocations of the handle.

12. In a front-strike typewriting machine, the combination with a platen and a carriage therefor, of a frame overlying the platen ind pivoted at its rear upon the carriage and atits front overhanging the platen, and

at its front end having means for supporting a pendent stencil-card in front of the platen, a reciprocatory handle upon said carriage for returning the same, self-ele. vating means including av rotary cam car .ried by the free end of the frame, and means extending from the handle to saidcam to rotate the latter and thereby to elevate the frame step by step at successive reciprocations of' the handle.

13. In a front-strike typewriting ma chine, the combination with a platen and a carriage therefor, of a frame overlying the platenand pivoted .at itsrear upon the carriage and overhanging the front of the platen, and .at its front end having means for supporting a stencil-card pendent therefrom in front of the platen, a cam mechanism acting upon said frame and camming the same to different heights, a handle upon said carriage for returning the same, and

operative means extending from said handle to said cam mechanism to cause the latter toelevate the frame step by-step at successive reciprocations of the handle, said fframe being movable down to initial position independentlyof said handle.

14-. In a front-strike typewriting machine,

the combination with a platen and a carriage th 'er'efonof a frame pivoted at its rear upon the rear of the carriageand extending forwardl v r the pla en, a r a abl de ce nclud ng coactmg-memhers mounted upon said earriageand said frame and effective when rotated to elevate sa d frame, a pawlat tchet mechan sm for opera ng sa d rotatable device, a carriage-returning handle, means to enable said carriage-retm'n ing handle to operate said pawi-and-ratchet mechanism to eleva 1 'd frame by at successive operations of said hand e, a a stencil-card holding means mernted independently of sail IWYZLLEHL mechanism and depending from sai at the ront of the platen.

15. In a front-strike typewriting machine, the combination with a platen and a carriage therefor, of a frame pivoted at its rear upon the rear of the carriage and extending forwardly over the platen, a rotatable device including coacting members mounted upon said carriage and said frame and effective when rotated to elevate said tame, a pawland-ratchet mechanism for operating said rotatable device, a carriagereturning handle, means to enable said carriage-returning handle to operate said pawland-ratchet mechanism to elevate said frame step by step at successive operations of said handle, and a stencil-card holding means mounted iimependently of said pawl-andratchet mechanism and depending from said frame at the front of the platen, said rotatable device being returnable to normal position, together with said frame, inclependently of said pawl-and-ratchet mechanism.

16. In a front-strike tjpei riting machine, the combination with a platen and a carriage therefor, of a frame pivoted at its rear upon the rear of the *ar -iage and extending forwardly over the platen, a rotatable device including coacting members mounted upon said carriage and said frame and effective when rotated to elevate said frame, a pawl-and-ratchet mechanism for operating said rotatable device, a carriage-returning handle, means to enable said carriage-returning handle to operate said pawl-andmechanism to elevate said frame step by step at successive ope ations of said handle, and a stcncilcard holding m *ans mounted independently of said pawl-andratchet mechanism and depending fronn said if 211119 at the front of the platen, said rotatable device being;- in the form of a cam, said pawl-alid-ratchet mechanism including a ratclwt-whcel connected to said cam and having ditierentlv spaced sets of teeth, and also including a drive pawl *apable of operating seriatin'i all of the teeth in each set, settable means for determining which set of teeth shall be operated by the pawl, and. releasable means for detaining said cam at any point to which it rotated by said pawl.

17. In a frontstrilie typewriting machine, the combination with a platen and :1. carriage therefor, of a frame pivoted at its rca upon the rear of the carriage and extending forwardly over the platen, a rotatable deratchet mill, spaced di'lterently from the others, means settable to enable said pawl to operate the teeth in any set, a carriagorcturning handle, means to or able said carriage-icturning handle to operate said pawl-aml-ratchet mechanism to elevate said frame step by step at successive operations of said handle, and a stencll- 'ard holdmg men s depending from said fram at th front or the platen 18. In a frontetrilte typevsritin;- machine, the combination with a platen and a airriagc therefor, of a frame overhanging the platen and pivoted at its rear, a reciproca ing handle upon said arriage for returning the same, means extending from said handle to said frame to elevate the frame step by step at successive reciprocations of said handle, said elevating n'vans including a drive pawl connected to said handle, a ratchet, an elevating cam connected to said ratchet,and a member adjustable independently of said handle and p: wl tor rcgulating the extent of line-spacing movements of the stencil-card, and a stencil-card holding means mounted independently of said pawl, ratchet and cam and pendent from said frame in front of the platen.

19. In a front-strike typewriting machine, the combination with a platen and a carriage therefor, of a frame overhanging the platen and pivoted at its rear, a reciprocating ha dle upon said carriage for returning the same, means extending from said handle to said frame to elevate the frame step by step at successive return movements of the carriage effected by said handle, said elevating means including a train mounted partly upon the carriage and partly upon said pivoted frame, and paid train including a pawl-and-ratchet mechanism and a frameelevating cam operable thereby, and a stencil-card holding means mounted independently of said pawl, ratchet and cam and pendent from said frame in front of the platen.

20. In a frontstrilte typewriting machine, the con'ibination wi h a platen and a carriage therefor, of a frame overhanging the platen and pivoted at its rear, reciprocatory handle upon said carriage for returning the same, means extending from said handle to said frame to elevate th manic step by step at successive return movrmu-nts oi: the carriap'e ettccte l by said handle. said elevating means including a train mounted partly upon the carriage and partly upon said pivoted frame, said trai: including a 3awl-and-ratchetmechanism and a framcllf) elevating cam operable thereby a rotatably adjustable ratchet-Wheel being included for regulating the extent of the line-spacing movements imparted to the stencil-card through said train, said ratchetwvheel hav ing groups of teeth thereon, the spacing in each group different from the other groups,

and the pawl and handle being eo-operative with the teeth in any group, and a stenciloai'd holding means mounted independently 10 of said pawl, ratchet and cam and pendent from said frame in front of the platen.

' A. B. SMITH. 

